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S355JR / A106 Grade B Carbon Steel Pipes are designed for high-temperature, high-pressure applications in oil & gas, power generation, petrochemical, shipbuilding, and structural industries. Manufactured from premium-grade materials including 10#, 20#, Q235, Q355, A53 Grade B, and A500 standards, these pipes offer exceptional strength, weldability, and corrosion resistance.
Material Options: S355JR, Q235, Q355, A106 Grade A/B/C, A53 Gr.B, A500 Gr.A/B/C, ST42.2, SS400
Production Standards: ASTM, ASME, ISO, JIS, EN, DIN
Outer Diameter: 12.7 mm – 406 mm (Seamless & Welded)
Wall Thickness: 1.2 mm – 12 mm (customizable)
Length: 5.8m – 11.8m, or customized as required
Surface: Black, Polished, Bright, or Pickled
Certificate: ISO9001, CE, SGS approved
Service: CNC cutting, annealing, pickling, polishing, bending, forging available
| Item | Specification |
| Product Name | S355JR / A106 Grade B Carbon Steel Pipe |
| Standard | EN 10025-2 (S355JR), ASTM A106 (Grade B) |
| Material Grade | S355JR, A106 Gr.B |
| Manufacturing Method | Seamless or Welded |
| Size Range | Outside Diameter: 21.3mm – 1016mm Wall Thickness: 2.0mm – 100mm |
| Length | 6m / 12m fixed length or customized as per client requirements |
| Tolerance | OD: ±1%, WT: ±12.5% (According to standard specifications) |
| Surface Treatment | Black Paint, Varnish, Epoxy Coating, Hot-Dip Galvanized, Bare Pipe |
| End Type | Plain End, Beveled End, Threaded End |
| Standards Applied | EN 10210 / EN 10219 / ASTM A106 / ASME B36.10 |
| Mechanical Properties (S355JR) | Yield Strength ≥ 355 MPa Tensile Strength: 470–630 MPa |
| Mechanical Properties (A106 Gr.B) | Yield Strength ≥ 240 MPa Tensile Strength: 415–585 MPa |
| Impact Toughness (S355JR) | ≥ 27J at -20℃ |
| Chemical Composition (S355JR) | C ≤ 0.24%, Mn ≤ 1.6%, P ≤ 0.045%, S ≤ 0.045% |
| Chemical Composition (A106 Gr.B) | C ≤ 0.3%, Mn 0.29–1.06%, P ≤ 0.035%, S ≤ 0.035% |
| Grade | Tensile Strength (min, psi) | Yield Strength (min, psi) |
| A106 Grade A | 48,000 | 30,000 |
| A106 Grade B | 60,000 | 35,000 |
| A106 Grade C | 70,000 | 40,000 |
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